EP 1555942 A2 20050727 - SYSTEMS AND METHODS FOR MINIMALLY-INVASIVE OPTICAL-ACOUSTIC IMAGING
Title (en)
SYSTEMS AND METHODS FOR MINIMALLY-INVASIVE OPTICAL-ACOUSTIC IMAGING
Title (de)
VORRICHTUNGEN UND VERFAHREN ZUR MINIMALINVASIVEN OPTISCH-AKUSTISCHEN BILDGEBUNG
Title (fr)
SYSTEMES ET PROCEDES D'IMAGERIE OPTIQUE-ACOUSTIQUE A INVASION MINIMALE
Publication
Application
Priority
- US 0331280 W 20031001
- US 26608202 A 20021007
Abstract (en)
[origin: US2004067000A1] This document discusses, among other things, an imaging guidewire that includes one or more optical fibers communicating light along the guidewire. At or near its distal end, one or more blazed or other fiber Bragg gratings (FBGs) directs light to a photoacoustic transducer material that provides ultrasonic imaging energy. Returned ultrasound is sensed by an FBG sensor. A responsive signal is optically communicated to the proximal end of the guidewire, and processed to develop a 2D or 3D image. In one example, the guidewire outer diameter is small enough such that an intravascular catheter can be passed over the guidewire. Techniques for improving ultrasound reception include using a high compliance material, resonating the ultrasound sensing transducer, using an attenuation-reducing coating and/or thickness, and/or using optical wavelength discrimination. Techniques for improving the ultrasound generating transducer include using a blazed FBG, designing the photoacoustic material thickness to enhance optical absorption. Techniques for distinguishing plaque or vulnerable plaque may be used to enhance the displayed image.
IPC 1-7
IPC 8 full level
A61B 8/12 (2006.01); G01H 9/00 (2006.01); G10K 15/04 (2006.01)
CPC (source: EP US)
A61B 1/00117 (2013.01 - US); A61B 1/00165 (2013.01 - US); A61B 5/0095 (2013.01 - EP US); A61B 5/0097 (2013.01 - EP US); A61B 5/02007 (2013.01 - EP US); A61B 5/6851 (2013.01 - US); A61B 5/6876 (2013.01 - EP US); A61B 5/742 (2013.01 - EP US); A61B 8/12 (2013.01 - EP US); G01H 9/004 (2013.01 - EP US); G01N 29/24 (2013.01 - EP US); G02B 6/10 (2013.01 - US); A61B 8/0833 (2013.01 - EP US)
Citation (search report)
See references of WO 2004032746A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2004067000 A1 20040408; US 7245789 B2 20070717; AU 2003299911 A1 20040504; AU 2003299911 A8 20040504; CA 2501048 A1 20040422; EP 1555942 A2 20050727; EP 1555942 B1 20150225; EP 1555942 B8 20150422; JP 2006501930 A 20060119; JP 2010221048 A 20101007; JP 4733982 B2 20110727; JP 5278831 B2 20130904; US 2007133925 A1 20070614; US 2009059727 A1 20090305; US 2010135111 A1 20100603; US 2012108943 A1 20120503; US 2013178729 A1 20130711; US 2014254975 A1 20140911; US 2016007860 A1 20160114; US 7447388 B2 20081104; US 7660492 B2 20100209; US 8059923 B2 20111115; US 8391652 B2 20130305; US 8731340 B2 20140520; US 9192307 B2 20151124; US 9339192 B2 20160517; WO 2004032746 A2 20040422; WO 2004032746 A3 20040923
DOCDB simple family (application)
US 26608202 A 20021007; AU 2003299911 A 20031001; CA 2501048 A 20031001; EP 03756904 A 20031001; JP 2004543092 A 20031001; JP 2010113577 A 20100517; US 0331280 W 20031001; US 201113285551 A 20111031; US 201313779985 A 20130228; US 201414280327 A 20140516; US 201514836705 A 20150826; US 26397808 A 20081103; US 67456807 A 20070213; US 70122810 A 20100205